CN105225526A - A kind of car light based on Intelligent traffic anti-collision system - Google Patents
A kind of car light based on Intelligent traffic anti-collision system Download PDFInfo
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- CN105225526A CN105225526A CN201510629966.6A CN201510629966A CN105225526A CN 105225526 A CN105225526 A CN 105225526A CN 201510629966 A CN201510629966 A CN 201510629966A CN 105225526 A CN105225526 A CN 105225526A
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Abstract
A kind of car light based on Intelligent traffic anti-collision system, the present invention relates to intelligent transportation system, it is intended to solve existing collision avoidance system, and to there is heat transfer agent acquisition range less, there is the poor and potential safety hazard of real experiences in its high in the clouds intelligent transportation service and wireless technology, and lacks the technical matterss such as effective car to car communication respectively.This invention structure comprises collision prevention device: comprising remote information communication unit; The car light be connected with collision prevention device: comprising visible ray short-path signal transceiver, carry out information interaction with remote information communication unit.The present invention is used for vehicle anticollision.
Description
Technical field
The present invention relates to intelligent transportation system, be specifically related to a kind of car light based on Intelligent traffic anti-collision system.
Background technology
Existing vehicle-mounted collision avoidance system, by integrated large quantity sensor, gathers travel condition of vehicle in road, analyzes the possibility that whether there is collision; Although high sensor can obtain precision data, it is very limited that it gathers distance, when the speed of a motor vehicle is in middle and high speed, cannot give warning in advance, even if or give warning in advance, driver does not have time enough to dodge fully yet, thus causes possible traffic hazard.Further, in high-end car system, high in the clouds intelligent transportation service is adopted to provide certain road early warning, but consider in actual use, in view of the complicacy of road, the existence of the technical matterss such as network popularization degree and connective stability, this technology is not able to better, more widely apply always.In addition, utilize the vehicle communication technology of Wireless Fidelity, although obtain certain early warning effect, easily there is crosstalk in frequency and the transportation network control frequency of adopting wireless fidelity technology, has safely potential potential safety hazard to public transport.Therefore, to expand and the mechanics of communication promoted between driving vehicle seems particularly important.Well-known vehicle turn signal, for road safety has made indelible contribution.For technological improvement and the intellectuality of car light, realize effective communication between vehicle, significantly will reduce accident rate further.
Summary of the invention
For above-mentioned prior art, the object of the invention is to provide a kind of car light based on Intelligent traffic anti-collision system, it is intended to solve existing collision avoidance system, and to there is heat transfer agent acquisition range less, there is the poor and potential safety hazard of real experiences in its high in the clouds intelligent transportation service and wireless technology, and lacks the technical matterss such as effective car to car communication respectively.In addition, the present invention produces far-reaching technology enlightenment to unmanned automotive development.
For achieving the above object, the technical solution used in the present invention is as follows:
Based on a car light for Intelligent traffic anti-collision system, comprise collision prevention device: comprising remote information communication unit; The car light be connected with collision prevention device: comprising visible ray short-path signal transceiver, carry out information interaction with remote information communication unit.
In such scheme, described collision prevention device, comprises sensor: probe vehicle status signal output feedback signal; Vehicle data bus: the feedback signal of receiving sensor also exports vehicle condition clock signal; Remote information communication unit: comprising network access equipment and remote information control module, network access equipment and internet carry out information interaction and output signal to remote information control module and/or remote information control module input signal to network access equipment and internet; Remote information control module is also connected with vehicle data bus.
In such scheme, described visible ray short-path signal transceiver, comprise to carry out with remote information communication unit information interaction optical fiber link: comprising signal transmitting path and Signal reception path; The ASIC be connected with optical fiber link: send and/or received code electric signal; Photoelectric communication device: light signal and/or electric signal are changed, receives and/or sends coded signal.
In such scheme, described feedback signal, comprises the signal with automobile position longitude and latitude and/or driving speed information feature.
In such scheme, described photoelectric communication device, comprises driver: connect ASIC by transfer bus, exports control signal; LED: the control signal receiving LED driver, sends light signal; Photodiode: receiving optical signals, is converted to electric signal; Trans-impedance amplifier: connect ASIC by transfer bus, receives the electric signal of photodiode, exports ASIC to.
In such scheme, described remote information control module, comprises field programmable gate module: accepting state clock signal, exports and controls clock signal and/or communication clock signal.
In such scheme, described coded signal, comprises the coded light signal with IEEE802.15.7 agreement definition Physical layer and medium access control layer; Also comprise the electric signal with encoded clock.
In such scheme, preferably, the left headlight of automobile comprises the first car light; Automobile Right headlight comprises the second car light; The left tail-light of automobile comprises the 3rd car light; Automobile Right tail-light comprises the 4th car light; Corresponding visible ray short-path signal transceiver is arranged in corresponding car light, can obtain extremely wide quorum sensing inhibitor face and Signal reception face.
In such scheme, headlight and/or tail-light, with the first car light, the second car light, the 3rd car light, the 4th car light, select different glow frequency and Optical Chromatography, ensures independent separately and do not disturb.
Beneficial effect of the present invention: in real time and not via high in the clouds transport services, the running information of vehicle near driving vehicle obtains; Take full advantage of vehicle car light structure, build high-speed communication network between vehicle; Communication frequency can not crosstalk public transport wireless frequency, expands communication bandwidth, and the high and communication efficiency of stability significantly promotes.
Accompanying drawing explanation
Fig. 1 is modular structure schematic diagram of the present invention;
Fig. 2 is collision prevention device modular structure embodiment schematic diagram of the present invention;
Fig. 3 is visible ray short-path signal transceiver embodiments schematic diagram of the present invention;
Fig. 4 is trans-impedance amplifier embodiment schematic diagram of the present invention;
In figure: 1a_EQ, 1b_EQ-balanced device, 2_CDR & SER.-clock and data recovery and deserializer, 3_DSW-phase compensator, the serializer of 4_20Gbps & SER.-20Gbps speed, 5_DE. & Drive, 9_DE. & Drive-postemphasises driver, 6_ASIC-special IC, 7_CDR-clock and data recovery, 8_MUX-traffic pilot, 11_LEDDR.-LED drive, 12_TIA-trans-impedance amplifier, 13_LED-light emitting diode, 14_PIND., D1, D2, D3-photodiode, 17-field programmable gate module, Zpd-impedance, Vpd-impedance voltage, LFC-photoelectric communication device.
Embodiment
All features disclosed in this instructions, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Below in conjunction with accompanying drawing, the present invention will be further described:
Fig. 1 is modular structure schematic diagram of the present invention, and a kind of car light based on Intelligent traffic anti-collision system, comprises collision prevention device: comprising remote information communication unit; The first car light be connected with collision prevention device, the second car light, the 3rd car light and the 4th car light: wherein comprise the first visible ray short-path signal transceiver, the second visible ray short-path signal transceiver, the 3rd visible ray short-path signal transceiver and the 4th visible ray short-path signal transceiver respectively, carry out information interaction with remote information communication unit.
Fig. 2 is collision prevention device modular structure embodiment schematic diagram of the present invention, described collision prevention device: comprising sensor: probe vehicle status signal output feedback signal; Vehicle data bus: the feedback signal of receiving sensor also exports vehicle condition clock signal; Remote information communication unit: comprising network access equipment and remote information control module, network access equipment and internet carry out information interaction and output signal to remote information control module and/or remote information control module input signal to network access equipment and internet; Remote information control module is also connected with vehicle data bus.The car light be connected with collision prevention device: comprising visible ray short-path signal transceiver, carry out information interaction with remote information communication unit.During use, car light of the present invention is mounted in various vehicle.
Embodiment 1
Fig. 3 is visible ray short-path signal transceiver embodiments schematic diagram of the present invention, field programmable gate module 17: at least export two electric signal, each electrical signal rate is at least greater than 1Gbps/s.Signal transmitting path, comprises the first balanced device 1a: connect field programmable gate module 17 by hypervelocity Ethernet interface XLAUI, receives electric signal; CDR & deserializer 2: receive the electric signal after the first balanced device 1a compensation, carry out clock and data recovery and unstring; Phase compensator 3: the electric signal receiving CDR & deserializer 2, carries out phase-fitting between the dynamic and stalic state electric signal; Serializer 4: the electric signal after receiving phase compensator 3 matching, exports serial electric signal; Postemphasis driver 5: the electric signal receiving serializer 4, carries out postemphasising and amplifieroperation, exports electric signal; ASIC6: connect the driver 5 that postemphasises by physical medium associated layers interface PMD.
Embodiment 2
Signal reception path, comprises ASIC6: receive the electric signal that photoelectric communication device LFC uploads; Second balanced device 1a: receive the electric signal that ASIC sends the first balanced device 1a in respective signal transmitting path; CDR7: receive the electric signal after the second balanced device 1a compensation, carry out clock and data recovery; Traffic pilot 8: receive the electric signal after CDR7 recovers, export at least two Half Speed electric signal; Postemphasis driver 9: the Half Speed electric signal receiving traffic pilot 8, carries out postemphasising and amplifieroperation.Field programmable gate module 17: connect the driver 9 that postemphasises by hypervelocity Ethernet interface XLAUI, at least receives two Half Speed electric signal.
Embodiment 3
Described photoelectric communication device LFC, comprises LED driver 11: connect ASIC6 by transfer bus, exports control signal; LED (13): the control signal receiving LED driver 11, sends light signal according to electric signal particular sequence pattern; PIN photodiode 14: receiving optical signals, is converted to electric signal; Trans-impedance amplifier 12: connect ASIC6 by transfer bus, receives the electric signal of PIN photodiode 14, exports ASIC6 to.
Embodiment 4
Fig. 4 is trans-impedance amplifier embodiment schematic diagram of the present invention, and described trans-impedance amplifier 12 comprises cross-linked first couple of differential input transistor Q1, Q2 and second couple of differential input transistor Q3, Q4; Each transistor base is connected with electric capacity, grounded emitter; Cross-coupled manner can under high frequency input, effectively reduce input signal response modes because of impedance Z pd1, impedance Z pd2 cause feature weaken effect; Resistance R3 and resistance R4 can provide dot peak detection and increase bandwidth; D1, D2, D3 are the photodiode of line arrangement.
Embodiment 5
LED 13 lamp choosing wavelength is interval at 850nm, 1310nm, 1490nm, CW-DM, 1550nm, DWDM; LED quantity and arrangement comprise lattice array and/or linear array and/or face array and/or body arrangement; The mode of enabling is photoinduction startup, passive light startup, the selection of optoacoustic control combination technology, the mechanically integrated module of photoinduction and/or alternatives.
Embodiment 6
In communication process, based on above embodiment, LED 13 sends packet, and photodiode 14 completes clock synchronous by connecting ASIC6 across sufficient amplifier 12, ensures the time accuracy that sampling occurs; LED driver 11 arranges the light period of LED13 in advance, keeps and the photodiode 14 same cycle, sends single data delay and be no more than 3ms in one-period.In receiving course, when 1/4, LED13 of the leading LED13 light period of photodiode 14 clock sends logical zero (lower optical densities), photodiode 14 starts to sample 1; When LED13 sends logical one (high light intensity), photodiode 14 starts to sample 2, ASIC6 and compares two and sample and obtain coded message.In the present invention, the LED switching rate that " flickers " is very high, and " bright " duration is extremely short, and human eye can not be experienced, and can not have influence on vehicle driving safety.
There is unknown mutation in hardware advances, the progress of technology is the reference of selection standard.But for changing bad invention, or cost viewpoint, only from the selection of technical scheme of practicality.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly belongs to those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.
Claims (6)
1. based on a car light for Intelligent traffic anti-collision system, it is characterized in that, comprise
Collision prevention device: comprising remote information communication unit;
The car light be connected with collision prevention device: comprising visible ray short-path signal transceiver, carry out information interaction with remote information communication unit.
2. a kind of car light based on Intelligent traffic anti-collision system according to claim 1, it is characterized in that, described collision prevention device, comprises
Sensor: probe vehicle status signal output feedback signal;
Vehicle data bus: the feedback signal of receiving sensor also exports vehicle condition clock signal;
Remote information communication unit: comprising network access equipment and remote information control module, network access equipment and internet carry out information interaction and output signal to remote information control module and/or remote information control module input signal to network access equipment and internet;
Remote information control module is also connected with vehicle data bus.
3. a kind of car light based on Intelligent traffic anti-collision system according to claim 1, is characterized in that, described visible ray short-path signal transceiver, comprises
With remote information communication unit carry out information interaction optical fiber link: comprising signal transmitting path and Signal reception path;
The ASIC be connected with optical fiber link: send and/or received code electric signal;
Photoelectric communication device: light signal and/or electric signal are changed, receives and/or sends coded signal.
4. a kind of car light based on Intelligent traffic anti-collision system according to claim 1, is characterized in that, described photoelectric communication device, comprises
Driver: connect ASIC by transfer bus, exports control signal;
LED: the control signal receiving LED driver, sends light signal;
Photodiode: receiving optical signals, is converted to electric signal;
Trans-impedance amplifier: connect ASIC by transfer bus, receives the electric signal of photodiode, exports ASIC to.
5. a kind of car light based on Intelligent traffic anti-collision system according to claim 2, it is characterized in that, described remote information control module, comprises field programmable gate module: accepting state clock signal, exports and controls clock signal and/or communication clock signal.
6. a kind of car light based on Intelligent traffic anti-collision system according to claim 3, is characterized in that, described coded signal, comprises the coded light signal with IEEE802.15.7 agreement definition Physical layer and medium access control layer; Also comprise the electric signal with encoded clock.
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| CN112874518A (en) * | 2021-01-19 | 2021-06-01 | 合肥索斯智能科技有限公司 | Vehicle-vehicle interconnection and anti-collision system based on visible light communication |
| CN112908035A (en) * | 2021-01-20 | 2021-06-04 | 温州大学 | Automobile auxiliary driving system based on visible light communication and implementation method |
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Application publication date: 20160106 |